(57) A dental implant attachment system (10) for mounting a dental prosthesis (20) on
a root implant comprises a base member (12) having a lower end sized to seat on the
upper end of an implant cylinder (14) and an upper end of outer diameter substantially
equal to the average outer diameters of various teeth, a securing device (26) for
securing the base member on the root implant, and various straight, angled or variable
angled prosthetic heads for securing to the prosthesis. The upper end of the base
member and the lower end of the prosthetic head have interengageable and indexable
locking formations (22, 24) for preventing rotation between the parts which can be
engaged in any of a number of possible relatively rotated fixed, indexed positions.
A releasable securing device secures the prosthetic head to the base member. The prosthesis
can be mounted on the prosthetic head by cementation, screw fixation, or other techniques.
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